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The selector “my-app” did not match any elements

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逝去的感伤
逝去的感伤 2020-12-07 18:15

The problem is when I run my app, it works fine. But when I refresh it, most of the time I get below msg.

The selector \"my-app\" did not match any e

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12条回答
  • 天涯浪人
    2020-12-07 18:39

    Django+Angular

    I had a custom index.html, not the one generated by angular CLI.

    I had this error because I placed the generated script files in the <head> section instead of at the end of the closing </body> tag (after the <app-root></app-root> tags)

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  • 夕颜
    2020-12-07 18:47

    Maybe you could use the

    defer

    Tag in your headers js-files.

    http://www.w3schools.com/TAgs/att_script_defer.asp

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  • 孤独总比滥情好
    2020-12-07 18:52

    If you are using the angular2 / asp.net core template from here: http://blog.stevensanderson.com/2016/10/04/angular2-template-for-visual-studio/ you might find replacing the last few lines of boot-client.ts with the following helps (and avoids a lot of scary looking console errors when HMR reloads your page):

    const bootApplication = () => { platform.bootstrapModule(AppModule); };
if (document.readyState === 'complete') {
    window.onload = () => bootApplication();
    location.reload();
} else {
    document.addEventListener('DOMContentLoaded', bootApplication);
}
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  • 梦谈多话
    2020-12-07 18:53

    When i create new component need to follow below steps to resolve the below issues.

    Step-1- Create new comonent with ng g c lakshya. Step-2- Under app lakshya folfer created with 4 files. Step-3- Index.html need <app-root></app-root> to <app-lakshya></app-lakshya> Step 4- app.Module.ts file change bootstrap: [AppComponent] to bootstrap: [LakshyaComponent]

    so above error resolve.

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  • 南笙
    2020-12-07 18:57

    This happened to me when I changed the bootstrap component from AppComponent to a new component. When you change it you need to change it in the main index.html as well. index.html should contain the bootstrap component.

    For example, if you change the app-component to app-login in app.module.ts in the bootstrap section then you should update your index.html like this

    <body>
  <app-login></app-login>
</body>
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  • 感动是毒
    2020-12-07 18:57

    In your app.module.ts, if you have my-app in the bootstrap, comment or delete it.

    bootstrap: [ AppComponent, // my-app ]

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